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What will be the output of the following C++ code?#include<iostream>using namespace std;int main(){ int x = 10; int& ref = x; ref = 20; cout << x << endl ; x = 30; cout << ref << endl; return 0;}a)2030b)1010c)1020d)1030Correct answer is option 'A'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What will be the output of the following C++ code?#include<iostream>using namespace std;int main(){ int x = 10; int& ref = x; ref = 20; cout << x << endl ; x = 30; cout << ref << endl; return 0;}a)2030b)1010c)1020d)1030Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What will be the output of the following C++ code?#include<iostream>using namespace std;int main(){ int x = 10; int& ref = x; ref = 20; cout << x << endl ; x = 30; cout << ref << endl; return 0;}a)2030b)1010c)1020d)1030Correct answer is option 'A'. Can you explain this answer?.

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